Antithrombic activity of some polysaccharide resins

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Biomedical Engineering

Background:

• Thrombosis remains a significant clinical challenge, necessitating the development of advanced antithrombotic materials.
• Crosslinked dextrans (Sephadex) are versatile matrices for functionalization.
• Modifying Sephadex with specific functional groups can impart desirable biological properties.

Purpose of the Study:

• To synthesize and characterize novel crosslinked dextran resins with specific functional groups.
• To evaluate the antithrombic activity of these modified Sephadex materials.
• To investigate the synergistic effects of different functional groups on antithrombic efficacy.

Main Methods:

• Chemical synthesis of crosslinked dextran (Sephadex) derivatives.
• Introduction of carboxymethyl, benzylsulphonate, and alpha-amino acid groups onto the Sephadex backbone.
• Assessment of antithrombic activity through in vitro assays (specific assays not detailed in abstract).

Main Results:

• Successful synthesis of Sephadex resins functionalized with carboxymethyl, benzylsulphonate, and alpha-amino acid groups.
• Benzylsulphonate functionalization alone conferred some antithrombic activity.
• The highest antithrombic activity was achieved with resins co-functionalized with benzylsulphonate, alpha-amino acid, and carboxylic acid groups.

Conclusions:

• Functionalized crosslinked dextrans exhibit promising antithrombic properties.
• A cooperative effect between benzylsulphonate, alpha-amino acid, and carboxylic acid groups enhances antithrombic activity.
• These modified Sephadex materials represent potential candidates for antithrombotic applications.